Because its the first step ti a gene expression.
Transcription factors are proteins that regulate the transcription of genes—that is, their copying into RNA, on the way to making a protein. The human body contains many transcription factors.
The palms of the hands are assumed to be facing forward; arms are at the side.
Decrease- killing off all of a certain type of animal or plant. Increase- people planting and farming land, which builds habitats for certain animals.
one is relative to whats happening now and the other is what happened in the past hope this helped!